CN105422025A - Device and method used for evaluating flushing liquid - Google Patents
Device and method used for evaluating flushing liquid Download PDFInfo
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- CN105422025A CN105422025A CN201410479914.0A CN201410479914A CN105422025A CN 105422025 A CN105422025 A CN 105422025A CN 201410479914 A CN201410479914 A CN 201410479914A CN 105422025 A CN105422025 A CN 105422025A
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Abstract
The invention provides a device and method used for evaluating flushing liquid. The device comprises a drilling liquid box, a flushing liquid box, a first fluid channel, a second annular fluid channel and an evaluation unit, wherein the first fluid channel is selectively communicated with the drilling liquid box and the flushing liquid box, the second annular fluid channel comprises a first annular space part formed by a first inner detecting barrel and a first outer detecting barrel arranged outside the first inner detecting sleeve in a sleeving mode, one end of the second fluid channel is communicated with the first fluid channel, the other end of the second fluid channel is selectively communicated with the drilling liquid box and the flushing liquid box, and the evaluating unit is used for evaluating the performance of flushing liquid according to the quality of the first annular space part generated before and after drilling liquid flows and the quality of the first annular space part generated after the flushing liquid flows. Due to the arrangement, the underground environmental condition can be simulated more really, and flushing efficiency of the flushing liquid is improved. Therefore, evaluation of a flushing technology can be carried out easily, and the well cementation quality is improved.
Description
Technical field
The invention belongs to oil-gas field development technical field, being specifically related to a kind of apparatus and method for evaluating flushing liquor.
Background technology
The exploitation of current shale gas all adopts oil-base mud to bore and opens payzone, and the bonding quality on the oil film effect Behavior of Hardened Cement Paste that oil-base mud is formed at the borehole wall and stratum, while due to oil-base mud thickness, and drilling fluid is poor, displacement efficiency is low, reduces cementing quality, affects annular space integral sealing effect.
High-efficiency rinsing liquid technology is one of key technology improving shale gas cementing quality at present, adopts rational flushing liquor system and effective developing technique, effectively can improve cementing quality.But at present in cementing operation process, affect the many factors that flushing liquor rushes developing result, as: the factors such as wellbore quality, hole deviation, borehole size, mud property, operational discharge capacity, flushing liquor physicochemical property, prepad fluid structure.Current flushing liquor system and developing technique Lab-evaluation means lack or relatively simply, fail really effectively to carry out flushing liquor appraisal, flushing liquor technology rests in certain subjective understanding and theoretical research.Such as, flushing liquor evaluation is carried out mainly through six fast viscometer rotation modes in indoor.Although the method is simple, can not effective simulation wellbore hole, evaluation method shortage validity.At the scene mainly through test well, carry out on-the-spot application and evaluate, but due to on-the-spot influence factor more, easily cause evaluation result distortion.
Summary of the invention
For the problems referred to above existing in prior art, the present invention aims to provide a kind of device for evaluating flushing liquor.This device, under real simulation subsurface environment condition, reasonably can carry out the evaluation of flushing liquor flush efficiency.The present invention also provides a kind of method for evaluating flushing liquor.
According to an aspect of the present invention, provide a kind of device for evaluating flushing liquor, it comprises:
Drilling fluid case,
Flushing liquor case,
First fluid passage, it is communicated with flushing liquor case is selective with drilling fluid case,
The second fluid passage of ring-type, comprise and detect cylinder and be socketed in first the first outer the first annular space portion detected cylinder and formed detected outside cylinder in first, wherein, one end of second fluid passage is connected with first fluid passage, the other end is communicated with flushing liquor case is selective with drilling fluid case
Evaluation unit, for flowing through at drilling fluid the performance that forward and backward quality and the quality after flushing liquor flows through evaluate flushing liquor according to the first annular space portion.
By above-mentioned setting, can more realistically under simulation well under ambient conditions, the flush efficiency of flushing liquor.Thus be conducive to carrying out developing technique evaluation, improve cementing quality.And this apparatus structure is simple, be easy to realize.
Preferably, the first outer internal face detecting cylinder is manufactured by artificial sandstone.Simulated the flushing liquor assess effectiveness at different interface by this set, be conducive to simulating the borehole wall in actual cementing operation better.
In one embodiment, at the two ends in the first annular space portion, the second annular space portion being contained in second fluid passage and the 3rd annular space portion are set respectively, second annular space portion is formed by the second inner core and the second urceolus be socketed in outside the second inner core, 3rd annular space portion is formed by the 3rd inner core and the 3rd urceolus be socketed in outside the 3rd inner core, wherein, the two ends detecting cylinder in first are respectively with the second inner core with the 3rd inner core is detachable is connected, and the first outer two ends detecting cylinder are respectively with the second urceolus with the 3rd urceolus is detachable is connected.By above-mentioned setting, the first annular space portion has been arranged on the centre in the second annular space portion and the 3rd annular space portion, the first interior detection cylinder and the first outer cylinder that detects can disassemble by second fluid passage simultaneously.Thus can change unlike material first outside detect cylinder, be conducive to simulating the borehole wall of different geological conditions.Meanwhile, the first outer detection cylinder can be realized to take off weigh, simplify operation.
Preferably, first fluid passage comprises pipe, and the arrival end of pipe is communicated with flushing liquor case is selective with drilling fluid case, the port of export and second fluid channel connection.Its structure is simple, is easy to realize second fluid passage and is communicated with flushing liquor case is selective with drilling fluid case.
Further preferably, pipe be arranged on by detect in first cylinder, the second inner core and the 3rd inner core formed in space.By this set, make whole apparatus structure compact, save and take up an area space.
In one embodiment, at the arrival end of pipe, the supporting seat for supporting pipe, the 3rd inner core and the 3rd urceolus is set, supporting seat is provided with ingate and outlet opening, ingate is used for pipe is communicated with flushing liquor case is selective with drilling fluid case, and outlet opening is used for the 3rd annular space portion is communicated with flushing liquor case is selective with drilling fluid case.By this set, make whole apparatus structure compact and reasonable.
In one embodiment, the plug for supporting pipe, the second inner core and the second urceolus is set at the port of export of pipe.Its compact conformation, is easy to realize.
In one embodiment, the sidewall of the port of export of pipe is arranged the intercommunicating pore for being communicated with the second annular space portion.By this set, be conducive to the annular flow of drilling fluid or flushing liquor, simulate practical working situation better.
In one embodiment, arrange between the axial direction detecting cylinder in the second inner core and first and be socketed in pipe support tube in first on the outer wall of pipe, in first, the outer wall at the two ends of pipe support tube is socketed on the inwall of detection cylinder in the second inner core and first respectively, arrange between the axial direction detecting cylinder in the 3rd inner core and first and be socketed in pipe support tube in second on the outer wall of pipe, in second the outer wall at the two ends of pipe support tube be socketed in respectively detect cylinder and the 3rd inner core in first inwall on.By above-mentioned setting party the two ends detecting cylinder in first are connected with the second inner core and the 3rd inner core respectively, and detection cylinder in first can be realized easily to remove from pipe support tube in pipe support tube and second in first.
In one embodiment, between the second urceolus and the first outer axial direction detecting cylinder, the first outer tube support tube is set, the two ends of the first outer tube support tube are socketed on the second urceolus and the first outer outer wall detecting cylinder respectively, between the 3rd urceolus and the first outer axial direction detecting cylinder, arrange the second outer tube support tube, the two ends of the second outer tube support tube are socketed on the 3rd urceolus and the first outer outer wall detecting cylinder respectively.By above-mentioned setting achieve the first outer two ends detecting cylinder respectively with the connection of the second urceolus and the 3rd urceolus.And the first outer cylinder that detects can be realized easily to remove from the first outer tube support tube and the second outer tube support tube.
In one embodiment, also comprise support and be connected with support and the workbench that can rotate relative to support, supporting seat and plug are arranged on the table.The rotation of workbench relative to level ground can be realized by this set, thus the developing technique evaluation of energy Simulated Water horizontal well, straight well and inclined shaft.
In one embodiment, first fluid passage is arranged the control element being used for control flow check rate of flow of fluid and pressure.Control element for control flow check rate of flow of fluid and pressure is namely set on the selective feeding pipeline be connected with second fluid passage of mud pit and flushing liquor case.Flushing liquor can be reconciled by the speed of first fluid passage and second fluid passage and pressure by this set, effectively can carry out turbulent flow and bedding replaces evaluation.
In one embodiment, photologging element is set at the end in the 3rd annular space portion.By this set, can fluid flow state be recorded, observe blending interface, for the research of developing technique provides analysis means.The displacement efficiency analysis under different flow regime can be carried out simultaneously, can flow field analysis be carried out.
According to a further aspect in the invention, provide a kind of use to evaluate the method for flushing liquor according to above-mentioned device, comprise the following steps:
Step one: weigh outside first and detect cylinder, obtain the first mass value;
Step 2: make drilling fluid case and first fluid expanding channels, make circulation of drilling fluid;
Step 3: weigh outside first and detect cylinder, obtain the second mass value;
Step 4: make described flushing liquor case and described first fluid expanding channels, flushing liquor is circulated;
Step 5: weigh outside first and detect cylinder, obtain the 3rd mass value;
Step 6: the effect evaluating flushing liquor based on the first mass value, the second mass value and the 3rd mass value.
Before step 6, repeat step 4 and step 5 successively.By said method, flushing liquor can be carried out easily and rinse assess effectiveness, also can carry out the evaluation of flushing liquor developing technique.
Compared with prior art, the invention has the advantages that, can flushing liquor flow regime in real simulation pit shaft, the evaluation of flushing liquor flush efficiency can be carried out, also can carry out developing technique evaluation, the displacement efficiency analysis under different flow regime can be carried out, can flow field analysis be carried out.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described in detail.In the drawings:
Fig. 1 shows according to the device for evaluating flushing liquor of the present invention.
Accompanying drawing is not according to the scale of reality.
Detailed description of the invention
To introduce according to a preferred embodiment of the invention hereinafter.
Fig. 1 show in more detail according to the device 100 for evaluating flushing liquor of the present invention.As shown in Figure 1, the device 100 evaluating flushing liquor comprises drilling fluid case 1, flushing liquor case 2, first fluid passage 3, second fluid passage 4 and evaluation unit (not shown).Wherein, first fluid passage 3 is communicated with flushing liquor case 2 is selective with drilling fluid case 1.One end of second fluid passage 4 is connected with first fluid passage 3, and the other end is communicated with flushing liquor case 2 is selective with drilling fluid case 1.Second fluid passage 4 comprises by the first interior detection cylinder 6 and is socketed in the first annular space portion 41 that outside first in first outside detection cylinder 6, detection cylinder 7 is formed.Evaluation unit is used for flowing through at drilling fluid the performance that the forward and backward quality in first ring sky portion 41 and the quality after flushing liquor flows through evaluate flushing liquor according to the first outer cylinder 7 that detects.
Thus, first fluid passage 3 is first communicated with drilling fluid case 1, makes drilling fluid flow through first fluid passage 3 and second fluid passage 4 successively, and flows back to drilling fluid case 1.Make drilling fluid with certain discharge capacity at the first annular space portion 41 Inner eycle certain hour.Then, first fluid passage 3 is communicated with flushing liquor case 2 again, to circulate certain hour with certain discharge capacity with flushing liquor in the first annular space portion 41.And then Utilization assessment unit flows through at drilling fluid the performance that forward and backward quality and the quality after flushing liquor flows through evaluate flushing liquor according to the first outer cylinder 7 that detects.By above-mentioned setting, energy real simulation subsurface environment, rationally can carry out the flush efficiency evaluation of flushing liquor.
As shown in Figure 1, the second annular space portion 42 being contained in second fluid passage 4 and the 3rd annular space portion 43 are set respectively at the two ends in the first annular space portion 41.Wherein, the second annular space portion 42 is formed by the second inner core 8 and the second urceolus 9 be socketed in outside the second inner core 8.3rd annular space portion 43 is formed by the 3rd inner core 10 and the 3rd urceolus 11 be socketed in outside the 3rd inner core 10.
First fluid passage 3 comprises pipe 12.And in order to make whole device 100 compact conformation, saving and taking up an area space, this pipe 12 can be arranged on by detect in first cylinder 6, second inner core 8 and the 3rd inner core 10 formed in space 13.Understandably, pipe 12 can also be arranged on the outside in interior space 13, as long as one end is communicated with for introducing drilling fluid or flushing liquor with drilling fluid case 1 and flushing liquor case 2 are selective, and the other end is communicated with second fluid passage 4.
Pipe support tube 16 on the outer wall being socketed in pipe 12 first is set between the axial direction detecting cylinder 6 in the second inner core 8 and first.In first, the outer wall at the two ends of pipe support tube 16 is socketed on the second inner core 8 and the first interior inwall detecting cylinder 6 respectively.In the 3rd inner core 10 and first, detect pipe support tube 17 in second on the outer wall that to arrange between cylinder 6 and be socketed in pipe 12, in second the outer wall at the two ends of pipe support tube 17 be socketed in respectively detect cylinder 6 and the 3rd inner core 10 in first inwall on.Detect the outer wall of cylinder 7 on outer with first is socketed in respectively at the second urceolus 8 and the first outer two ends arranging the first outer tube support tube 18, first outer tube support tube 18 between cylinder 7 of detecting.Be socketed in the 3rd urceolus 11 and first respectively detect on the outer wall of cylinder 7 outward at the 3rd urceolus 11 and the first outer two ends arranging the second outer tube support tube 19, second outer tube support tube 19 between cylinder 7 of detecting.First outer tube support tube 18 is socketed in first outside pipe support tube 16, and both constitute the 4th annular space portion 44 be all communicated with the first annular space portion 41 and the second annular space portion 42.Second outer tube support tube 19 is socketed in second outside pipe support tube 17, and both constitute the sky portion, five rings 45 be all communicated with the 3rd annular space portion 43 with the first annular space portion 41.
Such as, the two ends detecting cylinder 6 in first are threaded with pipe support tube 17 in pipe support tube in first 16 and second respectively.For realizing, the first interior cylinder 6 that detects is disassembled easily.In like manner, the first outer two ends detecting cylinder 7 are threaded with the first outer tube support tube 18 and the second outer tube support tube 19 respectively.For realizing, the first outer cylinder 7 that detects is disassembled easily.First annular space portion 41 has been arranged on the centre in the second annular space portion 42 and the 3rd annular space portion 43, and the first interior detection cylinder 6 and the first outer cylinder 7 that detects can disassemble by second fluid passage 4 simultaneously.Thus the first outer detection cylinder 7 of unlike material can be changed, be conducive to the borehole wall of simulating different geological conditions.Meanwhile, the first interior cylinder 7 that detects can be realized to take off and weigh, simplify operation.
The first outer internal face detecting cylinder 7 is manufactured by artificial sandstone, for simulating the pit shaft situation of different geological conditions.
To detect in the second inner core 8 and first between pipe support tube 16, in first in cylinder 6 and first between pipe support tube 16, to detect in cylinder 6 and second between pipe support tube 17, between the first outer tube support tube 18 and the second urceolus 8 in the 3rd inner core 10 and second between pipe support tube 17, in first, the first outer tube support tube 18 first is outer detects between cylinder 7, between the second outer tube support tube 19 and the 3rd urceolus 11, and the second outer tube support tube 19 and first detects between cylinder 7 outward and all arranges seal 20.For the sealing of assurance device 100.
In one embodiment, the supporting seat 14 for supporting pipe 12, the 3rd inner core 10 and the 3rd urceolus 11 is set at the arrival end (namely the one end be communicated with selective with drilling fluid case 1 and flushing liquor case 2) of pipe 12.The cardinal principle centre of supporting seat 14 is provided with axial ingate 141, and is communicated with pipe 12.Supporting seat 14 arranges the outlet opening 142 of radial outside for being communicated with the 3rd annular space portion 43.Thus pipe 12 is communicated with flushing liquor case 2 is selective with drilling fluid case 1 by ingate 141, and flow back to drilling fluid case 1 and flushing liquor case 2 respectively by the drilling fluid in the 3rd annular space portion 43 or flushing liquor.Thus define drilling fluid or flushing liquor circulation, and be conducive to the recycling of drilling fluid and flushing liquor.Meanwhile, this set, makes whole device 100 compact conformation reasonable.
In a specific embodiment, the first supporting seat stage portion 144 that supporting seat 14 can comprise supporting seat body 143, extend from supporting seat body 143 to pipe 12 end, and the second supporting seat stage portion 145 extended from the first supporting seat stage portion 144 to pipe 12 end.The arrival end of pipe 12 can be embedded into ingate 141 and be communicated with it.Such as, by being threaded pipe 12 is tightened on the inwall being formed in ingate 141.3rd inner core 10 can be socketed on the outer wall of the second supporting seat stage portion 145, and is attached thereto by screw thread.3rd urceolus 11 can be socketed on the outer wall of the first supporting seat stage portion 144, and is attached thereto by screw thread.
In like manner, the plug 15 for supporting pipe 12, second inner core 8 and the second urceolus 9 is set at the port of export (namely the non-other end be communicated with selective with drilling fluid case 1 and flushing liquor case 2) of pipe 12.The first plug stage portion 152 that plug 15 can comprise plug body 151, extend from plug body 151 to pipe 12 end, and the second plug stage portion 153 extended from the first plug stage portion 152 to pipe 12 end.And axial installing hole 154 is set in the centre of the second plug stage portion 153, for holding the port of export of pipe 12.Such as, by being threaded pipe 12 is tightened on the inwall of installing hole 154.Second inner core 8 can be socketed on the outer wall of the second plug stage portion 153, and is attached thereto by screw thread.Second urceolus 9 can be socketed on the outer wall of the first plug stage portion 152, and is attached thereto by screw thread.
For realizing being communicated with of first fluid passage 3 and second fluid passage 4, communication of fluid passage 21 is set.Communication of fluid passage 21 comprises the intercommunicating pore 121 on the sidewall of the port of export being arranged on pipe 12, the intercommunicating pore 81 be arranged on the sidewall of the second inner core 8, and is socketed in pipe 12 and the radial middle limited part 22 of the second inner core 8.The inwall of limited part 22 is threaded connection on the outer wall of pipe 12.And the contact internal walls of the outer wall of limited part 22 and the second inner core 8, and seal 20 is set between.
Device 100 also comprises support 23 and is connected with support 23 and the workbench 24 that can rotate relative to support 23.Supporting seat 14 and plug 15 are fixedly connected on workbench 24.Thus, workbench 24 can rotate relative to level ground, thus the developing technique evaluation of energy Simulated Water horizontal well, straight well and inclined shaft.
Device 100 also comprises piston pump 25.The arrival end of piston pump 25 is communicated with flushing liquor case 2 is selective with drilling fluid case 1 with flushing liquor liquid feed valve 261 by drilling fluid liquid feed valve 26.The port of export of piston pump 25 is connected with first fluid passage 3, and pressure meter 28 and flowmeter 29 are set at the feeding pipeline 27 of the first fluid passage 3 from piston pump 25 to the direction of pipe 12, and injection valve 30 is set at the arrival end sending into close pipe 12 on pipeline 27.Second fluid pipeline 4 is communicated with flushing liquor case 2 is selective with drilling fluid case 1 with flushing liquor return valve 32 by drilling fluid return valve 31.And the reflux line 271 be connected with flushing liquor return valve 32 at second fluid pipeline 4 and drilling fluid return valve 31 arranges the main valve 33 that refluxes.Can reconcile the flow of drilling fluid, speed and pressure by this set, especially flushing liquor is by the speed of second fluid passage and pressure, effectively can carry out turbulent flow and bedding replaces evaluation.
Arranging photologging element (not shown) at the end in the 3rd annular space portion 43, such as, is high-speed camera.By this set, can fluid flow state be recorded, observe blending interface, for the research of developing technique provides analysis means.
Evaluation unit can be the title be arranged on outside workbench 24.The first outer cylinder 7 that detects that is used for weighing flows through forward and backward at drilling fluid, and flushing liquor flow through after quality.
Application apparatus 100 is described below in detail to evaluate the method for flushing liquor.
Utilization assessment unit is weighed and first outer is detected cylinder 7, obtains the first mass value.The first outer cylinder 7 that detects is installed on second fluid passage 4, opens drilling fluid liquid feed valve 26, drilling fluid case 1 is communicated with piston pump 25.Drilling fluid flows back to drilling fluid case 1 from first fluid passage 3 through second fluid passage 4, and after the first annular space portion 41 Inner eycle certain hour, takes off the first outer cylinder 7 that detects and weigh, obtain the second mass value.Again the first outer cylinder 7 that detects is installed on second fluid passage 4, opens flushing liquor liquid feed valve 261, flushing liquor case 2 is communicated with piston pump 25.Flushing liquor flows back to flushing liquor case 2 from first fluid passage 3 through second fluid passage 4, and with a fixed displacement after the first annular space portion 41 Inner eycle certain hour, takes off the first outer cylinder 7 that detects and weigh, obtain the 3rd mass value.Utilize formula:
(the second mass value-three mass value)/(the second mass value-the first mass value), evaluates flushing liquor developing result.The drilling fluid quality namely utilizing flushing liquor to rinse out detects the mass ratio of the drilling fluid on cylinder 7 outside first with being bonded in.
Such as, embodiment 1:
Utilization assessment unit is weighed and first outer is detected cylinder 7, obtains 1231.1g.Adjustment workbench 24 is level, is installed on second fluid passage 4 by the first outer cylinder 7 that detects, opens drilling fluid liquid feed valve 26, make drilling fluid after the first annular space portion 41 Inner eycle 10min, takes off the first outer cylinder 7 that detects and weighs, obtain 1452.1g.Again the first outer cylinder 7 that detects is installed on second fluid passage 4, configure common MS flushing liquor 500ml, adjustment piston pump 25, control to send into flow velocity 0.5m/s in pipeline 27, pump pressure 0.1MPa, rinse 7min, take out and be weighed as 1333.2g, install back on second fluid passage 4, control velocity in pipes 0.5m/s, pump pressure 0.1MPa, rinses 3min, takes out the 1321.5g that weighs.Obtaining flush efficiency in this flushing liquor 10 minutes by formula is: (1452.1-1321.5)/(1452.1-1231.1)=59.1%, and the first outer interior wall energy detecting cylinder 7 is shown in obvious oil film.The overall evaluation is: MS flushing liquor is very poor to oil-base mud developing result under laminar flow condition.
Example 2
Identical with embodiment 1 method or similarly, adjustment workbench 24 is level, and to obtain the first quality be 1232.5g, and the second quality is 1455.2g.Configure common MS flushing liquor 500ml, control flow velocity 1.5m/s, pump pressure 0.15MPa in pipeline 27, rinse 7min, taking-up is weighed 1290.2g, after installing back, control flow velocity 1.5m/s, pump pressure 0.15MPa in pipeline 27, rinse 3min, taking-up is weighed 1275.8g, and in this flushing liquor 10 minutes, flush efficiency is: (1455.2-1275.8)/(1455.2-1232.5)=80.6%, detects wall energy in cylinder and sees obvious oil film.The overall evaluation is: MS flushing liquor is poor to oil-base mud developing result under turbulent-flow conditions.
Example 3
Identical with embodiment 1 method or similarly, adjustment workbench 24 is level, and to obtain the first quality be 1233.9g, and the second quality is 1456.2g.Configuration SCW displacement of reservoir oil flushing liquor 500ml, controls flow velocity 0.5m/s, pump pressure 0.15MPa in pipeline 27, rinses 7min, take out the 1250.2g that weighs, after installing back, control flow velocity 0.5m/s, pump pressure 0.15MPa in pipeline 27, rinse 3min, take out the 1241.2g that weighs.In flushing liquor 10 minutes, flush efficiency is thus: (1456.2-1241.2)/(1456.2-1233.9)=96.7%, detects cylinder inwall and has no obvious oil film.The overall evaluation is: SCW flushing liquor is good to oil-base mud developing result under laminar flow condition, has good oil displacement efficiency.
Can be found out by above-mentioned three embodiments, adopt apparatus and method of the present invention, flushing liquor flow regime in energy real simulation pit shaft, can carry out the evaluation of flushing liquor flush efficiency, also can carry out developing technique evaluation.
Example 4
With embodiment 1 method similarly, in drilling fluid case 1, configure 1.4g/cm
3conventional mud 500ml, adjustment pump speed, controls flow velocity 1.0m/s in pipeline 27, circulates 3 minutes.1.0g/cm is configured in flushing liquor case 2
3flushing liquor, and add milky tracer, adopt 0.5m/s annular space to return speed and replace mud, adopt high-speed camera shooting to replace blending interface, within 3 minutes, take pictures 180, measure blending interface length 0.2m, there is significantly mixed slurry band.
Thus, adopt apparatus and method of the present invention, the displacement efficiency analysis under different flow regime can be carried out, and exhibition flow field analysis can be seen.
The foregoing is only the preferred embodiment of the present invention; but scope is not limited thereto; any those skilled in the art, in technical scope disclosed by the invention, can easily carry out changing or changing, and this change or change all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claims.
Claims (15)
1. for evaluating a device for flushing liquor, it is characterized in that, comprising:
Drilling fluid case,
Flushing liquor case,
First fluid passage, it is communicated with described flushing liquor case is selective with described drilling fluid case,
The second fluid passage of ring-type, comprise and detect cylinder and be socketed in described first the first outer the first annular space portion detected cylinder and formed detected outside cylinder in first, wherein, one end of described second fluid passage is connected with described first fluid passage, the other end is communicated with described flushing liquor case is selective with described drilling fluid case
Evaluation unit, for flowing through at drilling fluid the performance that forward and backward quality and the quality after flushing liquor flows through evaluate flushing liquor according to described first annular space portion.
2. device according to claim 1, is characterized in that, the described first outer internal face detecting cylinder is manufactured by artificial sandstone.
3. device according to claim 1, it is characterized in that, the the second annular space portion and the 3rd annular space portion that are contained in described second fluid passage are set respectively at the two ends in described first annular space portion, described second annular space portion is formed by the second inner core and the second urceolus be socketed in outside described second inner core, described 3rd annular space portion is formed by the 3rd inner core and the 3rd urceolus be socketed in outside described 3rd inner core, wherein, the two ends detecting cylinder in described first are respectively with described second inner core with described 3rd inner core is detachable is connected, the described first outer two ends detecting cylinder are respectively with described second urceolus with described 3rd urceolus is detachable is connected.
4. device according to claim 3, is characterized in that, described first fluid passage comprises pipe, and the arrival end of described pipe is communicated with described flushing liquor case is selective with described drilling fluid case, the port of export and described second fluid channel connection.
5. device according to claim 4, is characterized in that, described pipe be arranged on by detect in described first cylinder, described second inner core and described 3rd inner core formed in space.
6. device according to claim 5, it is characterized in that, at the arrival end of described pipe, the supporting seat for supporting described pipe, described 3rd inner core and described 3rd urceolus is set, described supporting seat is provided with ingate and outlet opening, described ingate is used for described pipe is communicated with described flushing liquor case is selective with described drilling fluid case, and described outlet opening is used for described 3rd annular space portion is communicated with described flushing liquor case is selective with described drilling fluid case.
7. device according to claim 6, is characterized in that, arranges the plug for supporting described pipe, described second inner core and described second urceolus at the port of export of described pipe.
8. the device according to any one of claim 4 to 6, is characterized in that, the sidewall of the port of export of described pipe arranges the intercommunicating pore for being communicated with described second annular space portion.
9. the device according to any one of claim 5 to 8, it is characterized in that, pipe support tube on the outer wall being socketed in described pipe first is set between the axial direction detecting cylinder in described second inner core and described first, in described first, the outer wall at the two ends of pipe support tube is socketed on the inwall of detection cylinder in described second inner core and described first respectively, pipe support tube on the outer wall being socketed in described pipe second is set between the axial direction detecting cylinder in described 3rd inner core and described first, in described second, the outer wall at the two ends of pipe support tube is socketed on the inwall of detection cylinder and described 3rd inner core in described first respectively.
10. the device according to any one of claim 5 to 9, it is characterized in that, between described second urceolus and the described first outer axial direction detecting cylinder, the first outer tube support tube is set, the two ends of described first outer tube support tube are socketed on described second urceolus and the described first outer outer wall detecting cylinder respectively, between described 3rd urceolus and the described first outer axial direction detecting cylinder, arrange the second outer tube support tube, the two ends of described second outer tube support tube are socketed on described 3rd urceolus and the described first outer outer wall detecting cylinder respectively.
11. devices according to claim 7, is characterized in that, also comprise support and are connected with described support and the workbench that can rotate relative to described support, described supporting seat and described plug being arranged on described workbench.
12. devices according to claim 6, is characterized in that, described first fluid passage arranges the control element being used for control flow check rate of flow of fluid and pressure.
13. devices according to claim 7, is characterized in that, arrange photologging element at the end in described 3rd annular space portion.
14. 1 kinds of methods using the device according to any one of claim 1 to 13 to evaluate flushing liquor, comprise the following steps:
Step one: weigh outside described first and detect cylinder, obtain the first mass value;
Step 2: make described drilling fluid case and described first fluid expanding channels, make circulation of drilling fluid;
Step 3: weigh outside described first and detect cylinder, obtain the second mass value;
Step 4: make described flushing liquor case and described first fluid expanding channels, flushing liquor is circulated;
Step 5: weigh outside described first and detect cylinder, obtain the 3rd mass value;
Step 6: the effect evaluating flushing liquor based on described first mass value, described second mass value and described 3rd mass value.
15. methods according to claim 14, is characterized in that, before described step 6, repeat step 4 and step 5 successively.
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| CN201410479914.0A CN105422025B (en) | 2014-09-18 | 2014-09-18 | A kind of device and method for evaluating flushing liquor |
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| CN201410479914.0A CN105422025B (en) | 2014-09-18 | 2014-09-18 | A kind of device and method for evaluating flushing liquor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN110617018A (en) * | 2019-09-16 | 2019-12-27 | 西南石油大学 | Device and method for evaluating flushing efficiency of filter cake of well cementation cement injection drilling fluid |
| CN113125307A (en) * | 2019-12-31 | 2021-07-16 | 中国石油化工股份有限公司 | Method and device for evaluating drag reducer of finished oil |
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| CN108590638A (en) * | 2018-03-14 | 2018-09-28 | 长江大学 | Evaluate experimental rig and method that prepad fluid remains pit shaft drilling fluid cleaning efficiency |
| CN110617018A (en) * | 2019-09-16 | 2019-12-27 | 西南石油大学 | Device and method for evaluating flushing efficiency of filter cake of well cementation cement injection drilling fluid |
| CN110617018B (en) * | 2019-09-16 | 2021-06-11 | 西南石油大学 | Device and method for evaluating flushing efficiency of filter cake of well cementation cement injection drilling fluid |
| CN113125307A (en) * | 2019-12-31 | 2021-07-16 | 中国石油化工股份有限公司 | Method and device for evaluating drag reducer of finished oil |
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